Error messages

Hi in last few hours I had couple of restarts, but I do not understand these error meassages. It is the Phoenixminer that reboots, and it says that: 2021.04.14:14:30:22.734: wdog GPU1 not responding
2021.04.14:14:30:22.734: wdog Thread(s) not responding. Restarting.
Is it because of OC settings?